Commit 8eb99e9a authored by Hans de Goede's avatar Hans de Goede Committed by Rafael J. Wysocki
Browse files

ACPI: utils: Add acpi_reduced_hardware() helper 



Add a getter for the acpi_gbl_reduced_hardware variable so that modules
can check if they are running on an ACPI reduced-hw platform or not.

Signed-off-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarRafael J. Wysocki <rafael.j.wysocki@intel.com>
parent e49d033b

drivers/acpi/utils.c

+11 −0
Original line number Diff line number Diff line
@@ -872,6 +872,17 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv) 
}

EXPORT_SYMBOL(acpi_dev_get_first_match_dev);



/**

 * acpi_reduced_hardware - Return if this is an ACPI-reduced-hw machine

 *

 * Return true when running on an ACPI-reduced-hw machine, false otherwise.

 */

bool acpi_reduced_hardware(void)

{

	return acpi_gbl_reduced_hardware;

}

EXPORT_SYMBOL_GPL(acpi_reduced_hardware);



/*

 * acpi_backlight= handling, this is done here rather then in video_detect.c

 * because __setup cannot be used in modules.

include/acpi/acpi_bus.h

+1 −0
Original line number Diff line number Diff line
@@ -78,6 +78,7 @@ acpi_evaluate_dsm_typed(acpi_handle handle, const guid_t *guid, u64 rev, 


bool acpi_dev_found(const char *hid);

bool acpi_dev_present(const char *hid, const char *uid, s64 hrv);

bool acpi_reduced_hardware(void);



#ifdef CONFIG_ACPI

include/linux/acpi.h

+5 −0
Original line number Diff line number Diff line
@@ -748,6 +748,11 @@ acpi_dev_get_first_match_dev(const char *hid, const char *uid, s64 hrv) 
	return NULL;

}



static inline bool acpi_reduced_hardware(void)

{

	return false;

}



static inline void acpi_dev_put(struct acpi_device *adev) {}



static inline bool is_acpi_node(const struct fwnode_handle *fwnode)